--- title: "Longi Solar LR5-72HTH-580M vs Longi Solar LR5-72HTH-585M - Solar Panel Comparison | ComparePV" description: "Compare Longi Solar LR5-72HTH-580M vs Longi Solar LR5-72HTH-585M side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/longi-lr5-72hth-580m/longi-lr5-72hth-585m" image: "https://comparepv.com/og/compare/panels/longi-lr5-72hth-580m/longi-lr5-72hth-585m.png" updated: 2026-09-11 --- # Longi Solar LR5-72HTH-580M vs Longi Solar LR5-72HTH-585M Identical on every published parameter All 18 comparable parameters agree, with 1 more left out because at least one datasheet does not publish it. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Longi Solar LR5-72HTH-580M](https://comparepv.com/panel/longi-lr5-72hth-580m) | [Longi Solar LR5-72HTH-585M](https://comparepv.com/panel/longi-lr5-72hth-585m) | | Manufacturer | Longi Solar | Longi Solar | | Power | 580 Wp | 585 Wp | | Efficiency | 22.50 % | 22.60 % | | Technology | | | ## Every compared parameter | Parameter | 580M | 585M | | --- | --- | --- | | Rated power | 580 Wp | 585 Wp | | Module efficiency | 22.50 % | 22.60 % | | Power density | 224.5 Wp/m² | 226.5 Wp/m² | | Open-circuit voltage | 52.21 V | 52.36 V | | Voltage at max power | 44.06 V | 44.21 V | | Short-circuit current | 14.20 A | 14.27 A | | Current at max power | 13.17 A | 13.24 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 2278x1134x30 mm | 2278x1134x30 mm | | Module area | 2.583 m² | 2.583 m² | | Weight | 27.2 kg | 27.2 kg | | Weight per kWp | 46.9 kg/kWp | 46.5 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 25 yrs | 25 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | - | - | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 144 | | Bifacial | No | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other. - **Cumulative output, 580M:** 19,356 kWh - **Cumulative output, 585M:** 19,523 kWh - **Gap:** 167 kWh ## Output when hot | Condition | Cell temperature | 580M | 585M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 580 W | 585 W | 100.0% of rated power | | Cool, bright day | 40 °C | 555 W | 560 W | 95.7% of rated power | | Typical summer roof | 55 °C | 530 W | 534 W | 91.3% of rated power | | Hot roof | 70 °C | 504 W | 509 W | 87.0% of rated power | ## Against the whole database | Measure | 580M | 585M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,281 | #3,716 | 14,129 | 585M leads by 565 places | | Power density | #4,607 | #3,557 | 14,129 | 585M leads by 1,050 places | | Heat behaviour | #2,220 | #2,220 | 14,129 | Tied - the same position in the database | | Weight | #1,393 | #1,186 | 14,129 | 585M leads by 207 places | | Warranty | #9,912 | #9,912 | 14,129 | Tied - the same position in the database | | Overall | #4,852 | #4,515 | 14,129 | 585M leads by 337 places | ## Questions ### Which panel is better: Longi Solar LR5-72HTH-580M or Longi Solar LR5-72HTH-585M? According to our database: **Longi Solar LR5-72HTH-585M** has higher module efficiency (**22.60%** vs **22.50%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Longi Solar LR5-72HTH-580M and Longi Solar LR5-72HTH-585M? **Longi Solar LR5-72HTH-580M** has a module efficiency of **22.50%**, while **Longi Solar LR5-72HTH-585M** is **22.60%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Longi Solar LR5-72HTH-580M use vs Longi Solar LR5-72HTH-585M? **Longi Solar LR5-72HTH-580M** uses Monocrystalline cells; **Longi Solar LR5-72HTH-585M** uses Monocrystalline. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on Longi Solar LR5-72HTH-580M and Longi Solar LR5-72HTH-585M? **Longi Solar LR5-72HTH-580M** has a **25 years** power warranty; **Longi Solar LR5-72HTH-585M** has a **25 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ## Related comparisons - [Longi Solar LR5-72HTH-580M vs Longi Solar LR5-72HTH-575M](https://comparepv.com/compare/longi-lr5-72hth-580m/longi-lr5-72hth-575m) - One difference: module efficiency - [Longi Solar LR5-72HTH-580M vs Longi Solar LR5-72HTH-570M](https://comparepv.com/compare/longi-lr5-72hth-580m/longi-lr5-72hth-570m) - 3 differences, the largest is module efficiency - [Longi Solar LR5-72HTH-580M vs Longi Solar LR5-72HTH-565M](https://comparepv.com/compare/longi-lr5-72hth-580m/longi-lr5-72hth-565m) - 3 differences, the largest is module efficiency - [Longi Solar LR5-72HTH-580M vs Longi Solar LR7-72HVHF-670M](https://comparepv.com/compare/longi-lr5-72hth-580m/longi-lr7-72hvhf-670m) - 13 differences, the largest is module efficiency - [Longi Solar LR5-72HTH-580M vs Longi Solar LR8-66HYD-670M](https://comparepv.com/compare/longi-lr5-72hth-580m/longi-lr8-66hyd-670m) - 16 differences, the largest is module efficiency - [Longi Solar LR5-72HTH-580M vs Longi Solar LR7-72HVH-670M](https://comparepv.com/compare/longi-lr5-72hth-580m/longi-lr7-72hvh-670m) - 13 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/longi-lr5-72hth-580m/longi-lr5-72hth-585m Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.